StellaNGC Record & Playback

StellaNGC is a fully customizable and upgradable software suite which supports GNSS tests and measurements needs throughout the design cycle, from prototyping to manufacturing.

StellaNGC Record & Playback provides an accurate solution to record real life GNSS signals (multi-constellations & multi-frequency) and replay them through an ergonomic and intuitive interface.

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Fonction du logiciel Stella Record & Playback

Use Cases

GNSS Sensor

Obtain GNSS sensor performance through repeatable replay of recorded scenario

Positioning Performance

Test and validate system performances based on real environment recorded scenario


Ensure representative sensor data for complex environment

Technical Sheet

Key Features

Record & Playback

• RF Signals (GNSS Bands)
• Digital signal (PPS signal)
• Multiple simultaneous signal
• Automatic Gain Control

Easy to use HMI

• Ergonomic Graphical User Interface
• Application Programming Interface through TCP
• Predefined GNSS Bands selector
• Precalibration Procedure
• Monitoring (RF Spectrum, ADC/DAC Occupation)
• Conversion tool for Prost-Processing on I/Q Samples

Highly Configurable

• Center Frequency, Bandwidth, Quantization,
Reference Level
• Delayed Start / Hardware TTL Trigger
• Start Offset on Playback
• Configurable RF Gain on Playback
• Automatic Gain Control on Record
• Support for different RF targets: from high-grade
(VST 1st and 2nd generation) to entry-level (USRP RIO)

Portable Solution

• From robust PXIe chassis to lightweight
• GUI Deported on Tablets (Android / IPad)


  • 4 Simultaneous Channels
  • Interchannels Synchronization :
  • Recorded Band from 100MHz to 6GHz
    (1Hz step)
  • Bandwidth from 1 to 250MHz
    (step 1MHz)
  • Quantization from 1 to 16 bits
  • Positioning Fidelity : 98% (on 95

Hardware Platforms

Plateformes utiles au logiciel STellaNGC - M3 Systems